Vitamin D deficiency and insufficiency in Malaysian children with spina bifida
2020
Cross-sectional study. To determine the prevalence and potential risk factors of vitamin D deficiency and insufficiency among Malaysian children with spina bifida. Four Malaysian tertiary hospitals. Children with spina bifida were assessed for potential demographic, disease severity and lifestyle risk factors for vitamin D deficiency and insufficiency. Blood for 25-hydroxy vitamin D (25(OH)D) was taken. Vitamin D deficiency was defined as 25(OH)D levels ≤ 37.5 nmol/L and insufficiency as 37.6–50 nmol/L. Eighty children aged 2–18 years (42 males) participated in the study. Vitamin D levels ranged from 14 to 105 nmol/L (mean 52.8, SD 19.1). Vitamin D deficiency was identified in 18 (22.5%) and insufficiency in 26 (32.5%) children. Logistic regression analysis showed that skin exposure to sunlight ≤ 21% body surface area (OR: 6.2, CI 1.7–22.9) and duration of sun exposure ≤ 35 min/day (OR: 4.0, CI 1.2–14.1) were significant risk factors for vitamin D deficiency and insufficiency, respectively. Over half (55%) of Malaysian children with spina bifida seen in urban tertiary hospitals have vitamin D insufficiency and deficiency. Lifestyle sun exposure behaviours were risk factors for vitamin D deficiency and insufficiency.
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